21138698

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{5261}}^1$

素因数の和:5318

約数の個数: 24

約数和(自身を含む): 37791684

約数和(自身を除く): 16652986

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 287, 574, 2009, 4018, 5261, 10522, 36827, 73654, 215701, 257789, 431402, 515578, 1509907, 3019814, 10569349, 21138698]

約数ペア:

[(1, 21138698), (2, 10569349), (7, 3019814), (14, 1509907), (41, 515578), (49, 431402), (82, 257789), (98, 215701), (287, 73654), (574, 36827), (2009, 10522), (4018, 5261)]